Heating apparatus



Sept. 14, i943.

HEATING APPARATUS B. GOERG 4Filed Jan. l5, 1942 2 Sheets-Sheet Al 2 Sheets-Sheet 2 ,i i )l l lll INVENTOR 55m/#e0 605e@ A'TT NEY and the Verticallegs 4| of sections I3 and I 3a are also vertically aligned with one another and form the intermediate portions of boiler side wall 24.

The back section I2 also comprises a pair of vertical water legs 50 and 5I located, respectively, at opposite sides of the boiler and forming the rear portions of the twofside wallsv 23 and 24 of theiboiler. 'I'he two vertical legs 50 and 5I are connected at the bottom by a horizontal water leg 52 and at the top byl a horizontal water leg 53. The two vertical legs 50 and 5| are connected at their two vertical rear corners by a transverse vertical waterway 54 extending across the rear of the boiler and forming theboiler rear wall 55. The waterway 54 canbeconsidered for purposes of description as the main water space of the back section and the Lvertical legs 50 and as both the ends and as forward extensions.

of the main water space. The top leg 53 and bottom leg 52 also have forward extensions and which terminateon the same transverse vertical planeas the legs 50 and 5|.

When the sections KII, I2, I3,y and |3a are assembled, as shown, the bottom water legs 25, 42, and 52 are horizontally aligned with oneV another and form the bottomwallV 58`of the boiler,

and the ytop waterlegsZG, 43, and 53 are also horizontally aligned withone `another and, form the top wall 59 of the boiler. The intermediate water legs 21 and 44 are horizontally aligned with one another and form a division, or baille vwall 66 extending horizontally across the interior of the boiler.

'I'he space within the interior of the'boiler and beneath the baille wall `6|) functions as a combustion chamber 6|, and the space above this baille wall 60 functions as the boilerv flue space 62. through which the gaseous products of com-y bustion flow from the chamber'6l. If deslred,a lire-box 63 of suitable refractory material may be positioned in thelower parto! the combus-r tion chamber 6|. The iire-box 63 isshown as being provided with an opening 64 through which air and fuel is discharged from the. burner 38 by the discharge tube 31. Ii' desired, a suitable horizontal crown-sheet baille 65 may also beprovided to assure a more thorough contact ofthe combustion gases with the interior wall surfaces of the combustion chamber 6 I.

, The rear section I2 is provided with a relatively short vertical leg 61 extending fcrwardlyfrom f the main water space, or waterway 54, and downwardly from the top horizontal water leg 53. The lower end of the' water leg 61 is joined to the vertical side leg 50 by a relatively short horizontal leg 68. The short legs 61 and 68 can also be considered as forward extensions of the main water space of section |2 and they terminate forwardly in the same Vertical plane as the legs 50, 5 I, 52, and 53. The short vertical leg 61 is vertically aligned with the vertical legs 45 of sections I3 and |3a, and the short horizontal leg 68 is horizontally aligned with those portions ,of the legs 44 of sections I3` and |3a, which lie between their respective vertical legs 4I) and 45.

AThe rear section I2 also comprises a tubularshaped wall which extends longitudinally of the boiler and through the main water space 54 and defines a flue-gas outlet 1| adapted to be connected at its rear or discharge end with the usual chimney or stack (not shown). As shown,- the flue-gas outlet v1| is arranged alongside the boiler wall 23 and at one side of the central longitudinal axis of the boiler which is indicated vink Fig. 2 by the dotted line A. As can seen from an examination of Fig. 2, the tubular wall 18 also -forms one of the defining walls for each of the short legs 61 and 68, and the inner denning wall for the upper part of vertical leg 50. The wall 10 also forms a part of the lower wall of the forward or overhanging extension of the upper leg 53. .A j j The short vertical leg 61 and the vertical legs 45 of sections I3 and |3a form a vertical partition or baille wall 13 through the flue space 62 and which divides the latter into a flue pass 14 extending forwardly along the side wall 24 and a. ilue pass extending rearwardly along the side wall 23. VAs the kfront section II above the leg `21 has no vertical leg corresponding to the legs 45, the two flue passes 14 and 15 are joined at the front to form a single U-shaped flue passage connected at its inlet end with the combustion chamber 6| through anup-take passage 11 and terminating at its, other or discharge end in the flue-gas outlet,1|. AThe uptake-passage 11 is the Open space betweenthe lower part oi?. t he short-vertical leg 61 and the forwardly extend ing portions yof the vertical leg 5I directly opinoy site thereto. The short'vertical legs 4 6 of sections I3 and |3a divide the flueA pass 14 and advantageously provide additional heat absorbing` surfaces for the boiler. i

The main water space of the rear section I2 is deiined by a front transverse vertical'wallll and a rear transverse wall 8|. The upper` part 8Ia of the rear wall 8| is spaced rearwardly from the upper part a ofthe front wall a substantially greater distance than thelower part8|b spaced from the lower partl8l|b oi the front wall.4 `This construction ,provides an v`enlarged ,f water chamber at the upper and rear of the boilerand extending unobstructed from outer vertical vside, wall 86 lof vertical leg 5| and inwardly beyond the central longitudinalfaxis A of 'the boiler, and terminating inwardly inthe tubular vwall 10defining the flue-girlsr Outlet 1I. As can be (seen take passage 11' and that the upper part' 86d of the front defining wall 80 thereof, is engaged by the hot combustion gases as they leave the combustion chamber 6I. The vertical ns 81 formed on the upper wall p-art 80a aid `furtherin the eiilcient absorption of heat by suchpart 88a.

From the foregoing, itA is apparent that this enlarged unobstructed and eciently heated water chamber 85 'is made possible due to the oficenter location of the flue-gas outlet 1|, and also due to the arrangement of the .up-take passage 11 with respect to the chamber 85, the flue-gas off-take 1I, and the U-shaped llue passage through the space 62. Becauseof this `construction, the boiler disclosed is especially adapted for use with systems for heatingtap water. As shown, a hot water heatingl coil 96 is disposed within the water chamber 85 and transversely of the boiler and rear section I2. 'It is noted that the particular hot waterheatirig coil k9|) `which I have elected to show, isjintended for use with the tankless type of tap water heating system; i. e., a system which does not include a storage tank, the coil9|| having enough heat absorbing surface so that water'is heated to the desired temperature as it flows once therethrough to the hot water taps. Itwillbe appreciated, however, that water heating coils adapted'for use with storagetanks andy that other types of 'ft'anklessr coils, may also be used Without departing from the broader aspects of my invention.

The coil 90 comprises two series of pipe coils 9| and 92 connected at their upper and lower ends, respectively, by manifold iittings 93 and 94 rigidly secured to a cast-metal closure plate 95. Each of the series 9| and 92 is formed of two continuous coils of pipe which are connected together at their inner adjacent ends by a manifold chamber 96 formed in the plate 95. Thus,

each of the several coils of pipe is secured at itsv two ends to the cast-metal plate 95 and are supported thereby. The outer side wall 86 of vertical leg of rear section l?. which also forms the rear part of the boiler side wall 24, is formed with a rectangular opening 91 of sufficient size to permit the heating coil 90 to be inserted and re' moved from the water chamber 85. The plate 95 is suitably bolted to the wall 86 and closes the opening 91. Water service pipes 98 and 99 connect to the manifold ttin'gs 93 and 94, respectively, and one of these pipes is adapted to be connected to the water main c1' source of Water supply and the other to the hot water taps in` the building where the boiler is installed.

What I claim and desire to secure by Letters Patent of the United States is: f

l. In a boiler composed of a plurality of vertical sections arranged in sidebyside relation, a back section comprising upright front, rear, and side walls spaced apart to provide a boiler water space including an enlarged unobstructed water chamber at the back and upper part of said boiler and in open communication with the remaining portions of said water space and said enlarged Water chamber extending from one side wall inwardly of the boiler to at least the longitudinal center line of the boiler and adapted to receive a hot water heating coil; said one side Wall having an opening through which the hot water heating coil can be inserted and removed; rand walls defining a flue-gas outlet extending longitudinally of the boiler through said Waterfspace and at the side of the longitudinal center line opposite tol said one side wall.

v2. In a boiler composed of a plurality of hollow cast-metal sections arranged in vertical side-byside relation, a back section comprising first and second spaced upright outer side Walls, and spaced front and rear upright transverse Walls extending between and joined along their upright marginal portions to said outer side Walls to provide an upright Waterway arranged across the rear of said boiler; and walls dening a flue-gas outlet passage extending longitudinally of the boiler and through the upper part of said waterway alongside said iirst outer side wall; said vertical waterway including a water chamber eX- tending unobstructed from said second side wall to said flue-gas outlet passage and being large enough to receive a hot; water heating coil; and

said second outer side wall having an opening therein through which such coil may be inserted and removed.

3. In a boiler composed of a plurality of hollow cast-metal sections arranged in vertical side-byside relation, a back section comp-rising first and second spaced upright outer side walls, and spaced front and rear upright transverse walls extending between and joined along their upright marginal portions to said outer side walls to provide an upright waterway arranged across the rear of said boiler; and walls defining a fluegas outlet passage extending longitudinally of the boiler and through the upper part of said Waterway alongside said rst outer side wall; said front and rear transverse walls being spaced apart a greater distance at the upper part of said waterway than at the lower part thereof to provide an enlarged Water chamber therebetween and extending unobstructed from said second side wall to said flue-gas outlet passage and being large enough to receive a hot Water heating coil; and said second outer side wall having an openf ing therein through which such coil may be inserted and removed.

BERNARD GOERG. 

